Now (March 2015) I bought all three Jura coffee (World, Impresa and Honduras). About World I have already written a negative review. Impresa is worse. Fast disgusting. Has nothing in common with the Jura from Saturn a year ago. NOTHING.
Honduras, however, is drinkable through out. I'll create a separate review as soon as I order enough for me.
Nevertheless all three coffee from Jura almost the only on the German market (plus Vee) are not taste sour.